jquery page search [testing]

HTML

<h1>Quicksearch</h1>
<input id="filter-input" placeholder="Type in here to filter results" type="search"/>
<ol id="filter-results">
  <li>Bob</li>
  <li>Smith</li>
  <li>Moo</li>
  <li>Test Space</li>
</ol>

Javascript

$.expr[":"].CIcontains = $.expr.createPseudo(function (arg) {
  return function (elem) {
    return $(elem).text().toUpperCase().indexOf(arg.toUpperCase()) >= 0;
  };
});

// Every time a key is clicked
$("#filter-input").keyup(function () {
  // get the text from the box
  var curr_text = $(this).val();
  // pass it to the function
  filterResults(curr_text);
});

$("#close").click(function () {
  var curr_text = $(this).val();
  $("#filter-input").val("");
  filterResults(curr_text);
});

function filterResults(curr_text) {
  // hide all results
  $("#filter-results li").hide();
  // ... except those which are selected
  $("#filter-results li:CIcontains('" + curr_text + "')").show();
}